Moritz honigmann



N'ITED VSTATES PATENT" MORITZ HONIGMANN, or ennvnnhune,Griuullnr;v Y l. y

UTI LIZING EXHAUST-STEAM.

`SPECIIFIGA..'IION formingpartirof Letters Patent No. 2381.244, dated April 17, 1888. f

, Application filed January 20, 188B. Serial No. 261,363. (No model.)

To all whom it may concern: f

Beit known that I, MORITZ 'HoNIGMANim of Grevenberg', Germany, have invented a new and useful Improvement in Utilizing Exhaust- Steam,ofwhich the following is a specification.

This invention has for itsobject the restorationof pressure to exhauststeam of a steam= engine, so as to render it capable of again Figure 1 o f the drawingsrepresents-an elevation of the apparatus par-tly in sectiom Fig.

2 represents a horizontal section of one of the parts of thefapparatus, hereinafter termed displacers. 4l Y Similar letters of reference designate corre sponding partsin both figures. l

VVZV3 designate aseries of cylinders whichy are heated at their'bottoms by furnaces and kept cool at their upper parts by suitable means, as by exposure to theatmosphe're. In these cylinders are plungers P 'P2 P3, which I call displacers, and by which the steam is forced from one end of the cylinders to the other and from one cylinder to the next of the series, the cylinders communicating with each other through check-valves 1^ r2 fr". The displacers Work freely in the cylinders, so as to allow a sui-liciently free passage of the steam from one side to the other ,without requiring much power to work them. The displacers are very long,and their surfaces and the adjacent surfaces ofthe cylinders act as regenerators, the steamin passing from the heated to the cooled end of the cylinder imparting its heat thereto and the heat being restored to the steam passingin the opposite direction.

The displacers may be connectedl to a crank-V shaft, G, tov which rotary motion may be given through a pulley, R. The cranks of this shaft are alternately at 'diametricallygopposite points, so that the alternatedisplacers willl be at opposite ends `of their cylinders. Bythis arrangement the steam in the rst cylinder is moet heated just when' that in the second is coldest. Y y v Duringthe downstroke of the displacer in the first cylinder,V,thesteam therein is cooled, f

. which the gases iowto and fro.

in through a check-valve, 1", from a receiver,

v and consequently more exhaust-steam is drawn 13g-.into which the ehgihefexhhushs through the pipe c and valve ri'. During the upstroke of the same displacer the steam passesto the lower side and is heated,"and that in the second cylinder, V2, is at the ysame time passedto the upper side and cooled by the downstroke ofrv 'the displacer therein, the result being that as much steam passes from the first t9 the second cylinder as was drawn into f-the rst cylinder f fromrthe receiver, and this'steam has attained a higher pressure. f

During the-upstroke ofthe displacer in the second cylinder the compressed .steam is heated, and thereby attains a still higher press- A ure, and can either-,be discharged into another reeeiverD, for high-pressure steam, which can be employed at will for any purpose,being raised to a still higher pressure by ,being led v conducted off through. the pipe `t, or may be k,into athird cylinder,Y3, and so on. Thecheekyvalves r r2 r r4 prevent the return of the steam forced from one cylinder into the other,sothat the heated gases can only expand in the direc-y tionV indicated.

In this apparatus the regenerator play'sa'n important part by effecting a preliminary cooling and heating of the steam or gases when ypassing along the periphery ofthe displacerpiston from the one end of the cylinder to the other. The regenerator is constituted byvvery many small grooves (about two millimeters A wide and two to ten millimeters deep, and one hundred or one thousand in number, according to the size of the apparatus) formed inthe pel ripher'yof 4the displacer-piston, (seeFig. 2,) or in the sides of the cylinder and leading from one end of the cylinder to the other, through A length of displacer of one meter, with groovesof the same length,`constitutes' au almost perfectlyacting regenerator. Y i

The operation of this improved system will.

be more thoroughlyunderstood by the followying figures.l The exhaust-steam is heated from or 150 Celsius to 500V or 600 Celsius, whereby about one-third of the volume of the l steam contained in vone cylinder `canybe sent linto the next `cylinder with a pressure which roo is about 1.8 greater thanthat ofthe exhaustl atmosphere.

steam. From this may be obtained the following scale of pressures:

.Pressure of the exhaust-steam.

` Y First Y Second Third Recsele ab cylinder cylinder cylinder :Limos heres absolute absolute absolute P atmospheres. atmospheres. atmospheres.

1 v 1.8 l.3 1.8=3.2 1.8 3.2: 5.7 2 v 3.6 l.8 3.6='6.5 1.8X6.5=l1.6 3 5.4 1.8 5.4:9.7 1.8)(9. 7:17.11

It can now be readilyrseen how great an advantage is obtained if the exhaustlsteam be raised to a pressure higher than that of the This advantage can always be obtained in practical working by leading the exhaust-steam into a receiver provided with a blow-od or safety valve, and only allowing 

